Term
| Organisms reproduce by two main methods. One is division, in which the animal devides and creates an exact copy of itself. What is the other method of reproduction |
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| Some animals, like birds, reproduce by fusion of cells. Before a bird hatches, what protects the bird as it develops? |
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Definition
| The hard shell of the egg |
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Term
| Which part of the immune sytem is produced in the bone marrow and circulates through the blood to destroy germs? |
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Definition
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Term
| What part of the skeleton helps produce blood cells? |
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Term
| What is the name for the type of white blood cell that prodces antibodies that help the body fight infection? |
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Definition
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Term
| Which of the following structures make up the immune system? |
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Definition
| Bone Marrow. White blood cells. Lymphocytes |
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